Tuesday, September 18, 2012

Build An Indoor Hdtv Antenna

A digital high-definition television (HDTV) antenna has an advantage over the analog antenna it replaces in that there is no ghosting or interference patterns generated by the broadcasted signal. You can build your own indoor HDTV antenna from a few supplies purchased from a hardware store, a few tools found around the house and some parts from an electronics store or hobby shop.


Instructions


1. Place the board on the table horizontally. Measure a half inch up from the bottom left of the board. Make a mark with the pencil. Measure 2 inches across form the half inch mark. Make a mark with the pencil.. Measure 5-1/4th inches from the 2 inch mark. Make another mark with the pencil. Repeat this two more times. Make marks on the top of the board similar to those on the bottom of the board.


2. Screw a screw halfway into each of the marks on the board with the electric screwdriver. Bend each of the 14 inch long wires in half to form a "U" shape.


3. Place the "U" of a wire around the bottom most left screw on the board. Rotate the two free ends of the wire towards you. Repeat this procedure with the wires and the screws on the bottom of the board. Repeat this procedure with the screws and the wires at the top of the board, only rotating the two free ends of the wires away from you.


4. Place an end of one of the two 20 inch long wires beneath the screw at the bottom most left screw on the board. Run the wire to the next screw on the top of the board, then the next screw on the bottom of the board and then the next screw on the top of the board. Repeat this procedure with the other 20 inch long wire, only starting at the top left screw on the board.


5. Wrap an exposed end of one of the two wires attached to the coax adapter to the one of the two 20 inch long wires near the center of the board. Wrap the other exposed wire of the coax adapter to the other 20 inch long wire near the center of the board.


6. Screw down all of the screws with the electric screwdriver. Wrap a strip of electrical tape around one of the two 20 inch long wires wherever they crisscross each other.


7. Turn the board over. Place one of the two screens vertically on the board about one inch in from the left side. Nail the screen to the board with four or more nails. Place the other screen vertically on the board about one inch in from the right side and repeat the nailing process.


8. Screw an end of the coaxial cable to the threaded hole of the coax adapter. Screw the other end of the coaxial cable to the coax connection on the HDTV.







Tags: inch long, screw board, inch long wires, long wires, Repeat this, bottom board, coax adapter